DF-2 - Medium voltage switchgear

Test certificates

DF-A classification (KEMA-certificate)

DF-A cubicle contains a load isolating switch and an earth switch

1. Load break switch
Test Specification Test results
Insulating level IEC 62271-102
IEC 62271-200
IEC 60694		 Power-frequency withstand voltage 1 min.
  • to earth and between phases: 38 kV
  • over the insulating distance: 45 kV
Lightning-impulse withstand voltage 1.2/50 µsec 15 positive and 15 negative impulses per phase
  • to earth and between phases: 95 kV
  • over the insulating distance: 110 kV
Rated making and breaking capacity IEC 60129
IEC 60265.1		 Component Temperature rise
Allowed Measured
Pole terminals 65°C 47,5°C
Bus bar sets 65°C 59°C
IEC 60265.1 Nominal current 800 A
Short-time current 25 kA / 1 sec.
IEC 60265.1
Klasse E3		 Number of switchings: Type of switchings: Current (Ampere): Cos f:
Function 1 (100 % In) 100 C(O) 800 0.7
Function 2 (5 % In) 20 C(O) 42 0.7
Function 2a 20 C(O) 800 0.7
Function 4a (100 %) 10 C(O) 18 Cap
Function 4a (30 %) 10 C(O) 5 Cap
Function 5 5 C 63000 0.7
Function 6a 10 C(O) 100 0.7
Function 6b 10 C(O) 30 0.7
Mechanical endurance test IEC 62271-102
IEC 62271-200		 1000 operations
2. Earthing switch EM 20
Test Specification Test results
Rated making and breaking capacity IEC 60129 Peak value of the current 50 kA/17,5 kV - 63 kA/12 kV
Short-term current 20 kA/1 sec. bij 17,5 kV - 25 kA/1 sec. at 12 kV
IEC 60129 Number of switchings: Type of switchings: Current (Ampere): Cos f:
17,5 kV 5 C 50000 0,7
12 kV 2 C 63000 0,7
Mechanical endurance test IEC 60129
IEC 62271-200		 1000 switchings
3. Cubicle
Test Specification Test results
Internal arc (Pehla) IEC 62271-200 16 kA / 1 sec.
Complied with all 6 criteria
Test no interruption EDF
HN 64 S 41 § 7.106.1		 14 kA / 1 sec.
Degree of protection IEC 62271-200 IP4X
Just-operate value voltage indicators IEC 1243/5 Deba nv VDS complies with all requirements of the standard

DF-P classification (KEMA certificate)

DF-P contains a switch/fuse combination and an earthing switch

1. Switch/fuse combination
Test Specificatio, Test results
Insulating level IEC 62271-105
IEC 62271-200
IEC 60694		 Power-frequency withstand voltage 1 min.
  • to earth and between phases: 38 kV
  • over the insulating distance: 45 kV
Lightning-impulse withstand voltage 1.2/50 µsec 15 positive and 15 negative impulses per phase
  • to earth and between phases: 95 kV
  • over the insulating distance: 110 kV
Rated making and breaking capacity IEC 60129
IEC 60120
IEC 62271-200		 Component Temperature rise
Allowed Measured
Fuse bottom 65°C 47,5°C
Fuse top 65°C 59°C
IEC 62271-105 Nominal current 63 A
IEC 62271-105 Number of switchings: Type of switchings: Current (Ampere): Cos f:
Function 1 100 C(O) 800 0.7
Function 1 20 C(O) 42 0.7
Function 2 20 C(O) 800 0.7
Function 2 10 C(O) 18 Cap
Function 3 deel 1 10 C(O) 5 Cap
Function 3 deel 2 5 C 63000 0.7
Function 4 10 C(O) 100 0.7
Mechanical endurance test IEC 62271-105
IEC 62271-200		 1000 switchings
Testing the mechanical switch/fuse combination IEC 60420 clause 6.106 1000 switchings
2. Earthing switch EM 20
Test Specification Test results
Rated making and breaking capacity IEC 60129 Peak value of the current 50 kA/17,5 kV - 63 kA/12 kV
Short-term current 20 kA/1 sec. bij 17,5 kV - 25 kA/1 sec. bij 12 kV
IEC 60129 Number of switchings: Type of switchings: Current (Ampere): Cos:
17,5 kV 5 C 50000 0,7
12 kV 2 C 63000 0,7
Mechanical endurance test IEC 60129 1000 switchings EM 20 above the fuses
1000 switchings AE 20 below the fuses
3. Cubicle
Test Specification Test results
Internal arc (Pehla) IEC 62271-200 16 kA / 1 sec. IACFL (AICFLR also available)
Test no interruption EDF
HN 64 S 41 § 7.106.1		 14 kA / 1 sec.
Degree of protection IEC 62271-200 IP4X
Just-operate value voltage indicators IEC 1243/5 Deba nv VDS complies with all requirements of the standard

DF-D classification (KEMA-certificate)

DF-D cubicle contains a load isolating switch, a circuit breaker, and an earth switch

1. Load break switch (in upper part of the cubicle)
Test Specification Test results
Insulating level IEC 60265.1
IEC 62271-200
IEC 60694		 Power-frequency withstand voltage 1 min.
  • to earth and between phases: 38 kV
  • over the insulating distance: 45 kV
Lightning-impulse withstand current 1.2/50 µsec 15 positive and 15 negative impulses per phase
  • to earth and between phases: 95 kV
  • over the insulating distance: 110 kV
2. Circuit breaker (in lower part of the cubicle)
Test Specification Test results
Insulating level IEC 60298 Clause 6.1.7 Power-frequency withstand voltage 1 min.
  • to earth and between phases: 38 kV
IEC 60298 Clause 6.1.6 Lightning-strike hold current 1.2/50 µsec 15 positive and 15 negative pulses per phase
  • to earth and between phases: 95 kV
Vacuum circuit breaker IEC 62271-100 25 kA, 1250 A, 17,5 kV en 24 kV
3. Earthing switch EM 20
Test Specification Test results
Rated making and breaking capacity IEC 60129 Peak value of the current 50 kA/17,5 kV - 63 kA/12 kV
Short-term current 20 kA/1 sec. bij 17,5 kV - 25 kA/1 sec. at 12 kV
IEC 60129 Number of switchings: Type of switchings: Current (Ampere): Cos:
17,5 kV 5 C 50000 0,7
12 kV 2 C 63000 0,7
Mechanical endurance test IEC 60129 1000 operations
4. Cubicle
Test Specification Test results
Internal arc (Pehla) IEC 62271-200 16 kA / 1 sec.
Complied with all 6 criteria
Test no interruption EDF
HN 64 S 41 § 7.106.1		 14 kA / 1 sec.
Degree of protection IEC 62271-200 IP4X
Just-operate value voltage indicators IEC 1243/5 Deba nv VDS complies with all requirements of the standard

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